From 757cae5a6f0ac1c61ce149a066377a15d1ed881f Mon Sep 17 00:00:00 2001 From: Dudley Du Date: Mon, 20 Jul 2015 17:09:59 -0700 Subject: Input: cyapa - fully support runtime suspend power management Fix the the runtime suspend power management not working issue when system starts up and before user touches the trackpad device. TEST=test on Chromebook. Signed-off-by: Dudley Du Signed-off-by: Dmitry Torokhov --- drivers/input/mouse/cyapa.c | 73 ++++++++++++++++++++++++++++------------ drivers/input/mouse/cyapa.h | 2 +- drivers/input/mouse/cyapa_gen3.c | 4 +-- drivers/input/mouse/cyapa_gen5.c | 21 ++++++++---- drivers/input/mouse/cyapa_gen6.c | 4 +-- 5 files changed, 70 insertions(+), 34 deletions(-) diff --git a/drivers/input/mouse/cyapa.c b/drivers/input/mouse/cyapa.c index 2541fbb43533..5c08eeba6162 100644 --- a/drivers/input/mouse/cyapa.c +++ b/drivers/input/mouse/cyapa.c @@ -367,6 +367,7 @@ static int cyapa_open(struct input_dev *input) { struct cyapa *cyapa = input_get_drvdata(input); struct i2c_client *client = cyapa->client; + struct device *dev = &client->dev; int error; error = mutex_lock_interruptible(&cyapa->state_sync_lock); @@ -380,10 +381,9 @@ static int cyapa_open(struct input_dev *input) * when in operational mode. */ error = cyapa->ops->set_power_mode(cyapa, - PWR_MODE_FULL_ACTIVE, 0); + PWR_MODE_FULL_ACTIVE, 0, false); if (error) { - dev_warn(&client->dev, - "set active power failed: %d\n", error); + dev_warn(dev, "set active power failed: %d\n", error); goto out; } } else { @@ -395,10 +395,14 @@ static int cyapa_open(struct input_dev *input) } enable_irq(client->irq); - if (!pm_runtime_enabled(&client->dev)) { - pm_runtime_set_active(&client->dev); - pm_runtime_enable(&client->dev); + if (!pm_runtime_enabled(dev)) { + pm_runtime_set_active(dev); + pm_runtime_enable(dev); } + + pm_runtime_get_sync(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_sync_autosuspend(dev); out: mutex_unlock(&cyapa->state_sync_lock); return error; @@ -408,16 +412,17 @@ static void cyapa_close(struct input_dev *input) { struct cyapa *cyapa = input_get_drvdata(input); struct i2c_client *client = cyapa->client; + struct device *dev = &cyapa->client->dev; mutex_lock(&cyapa->state_sync_lock); disable_irq(client->irq); - if (pm_runtime_enabled(&client->dev)) - pm_runtime_disable(&client->dev); - pm_runtime_set_suspended(&client->dev); + if (pm_runtime_enabled(dev)) + pm_runtime_disable(dev); + pm_runtime_set_suspended(dev); if (cyapa->operational) - cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0, false); mutex_unlock(&cyapa->state_sync_lock); } @@ -527,7 +532,7 @@ static void cyapa_enable_irq_for_cmd(struct cyapa *cyapa) */ if (!input || cyapa->operational) cyapa->ops->set_power_mode(cyapa, - PWR_MODE_FULL_ACTIVE, 0); + PWR_MODE_FULL_ACTIVE, 0, false); /* Gen3 always using polling mode for command. */ if (cyapa->gen >= CYAPA_GEN5) enable_irq(cyapa->client->irq); @@ -542,7 +547,8 @@ static void cyapa_disable_irq_for_cmd(struct cyapa *cyapa) if (cyapa->gen >= CYAPA_GEN5) disable_irq(cyapa->client->irq); if (!input || cyapa->operational) - cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + cyapa->ops->set_power_mode(cyapa, + PWR_MODE_OFF, 0, false); } } @@ -609,7 +615,7 @@ static int cyapa_initialize(struct cyapa *cyapa) /* Power down the device until we need it. */ if (cyapa->operational) - cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0, false); return 0; } @@ -625,7 +631,8 @@ static int cyapa_reinitialize(struct cyapa *cyapa) /* Avoid command failures when TP was in OFF state. */ if (cyapa->operational) - cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0); + cyapa->ops->set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0, false); error = cyapa_detect(cyapa); if (error) @@ -644,7 +651,8 @@ out: if (!input || !input->users) { /* Reset to power OFF state to save power when no user open. */ if (cyapa->operational) - cyapa->ops->set_power_mode(cyapa, PWR_MODE_OFF, 0); + cyapa->ops->set_power_mode(cyapa, + PWR_MODE_OFF, 0, false); } else if (!error && cyapa->operational) { /* * Make sure only enable runtime PM when device is @@ -652,6 +660,10 @@ out: */ pm_runtime_set_active(dev); pm_runtime_enable(dev); + + pm_runtime_get_sync(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_sync_autosuspend(dev); } return error; @@ -661,8 +673,8 @@ static irqreturn_t cyapa_irq(int irq, void *dev_id) { struct cyapa *cyapa = dev_id; struct device *dev = &cyapa->client->dev; + int error; - pm_runtime_get_sync(dev); if (device_may_wakeup(dev)) pm_wakeup_event(dev, 0); @@ -681,7 +693,24 @@ static irqreturn_t cyapa_irq(int irq, void *dev_id) goto out; } - if (!cyapa->operational || cyapa->ops->irq_handler(cyapa)) { + if (cyapa->operational) { + error = cyapa->ops->irq_handler(cyapa); + + /* + * Apply runtime power management to touch report event + * except the events caused by the command responses. + * Note: + * It will introduce about 20~40 ms additional delay + * time in receiving for first valid touch report data. + * The time is used to execute device runtime resume + * process. + */ + pm_runtime_get_sync(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_sync_autosuspend(dev); + } + + if (!cyapa->operational || error) { if (!mutex_trylock(&cyapa->state_sync_lock)) { cyapa->ops->sort_empty_output_data(cyapa, NULL, NULL, NULL); @@ -693,8 +722,6 @@ static irqreturn_t cyapa_irq(int irq, void *dev_id) } out: - pm_runtime_mark_last_busy(dev); - pm_runtime_put_sync_autosuspend(dev); return IRQ_HANDLED; } @@ -1335,7 +1362,7 @@ static int __maybe_unused cyapa_suspend(struct device *dev) power_mode = device_may_wakeup(dev) ? cyapa->suspend_power_mode : PWR_MODE_OFF; error = cyapa->ops->set_power_mode(cyapa, power_mode, - cyapa->suspend_sleep_time); + cyapa->suspend_sleep_time, true); if (error) dev_err(dev, "suspend set power mode failed: %d\n", error); @@ -1389,7 +1416,8 @@ static int __maybe_unused cyapa_runtime_suspend(struct device *dev) error = cyapa->ops->set_power_mode(cyapa, cyapa->runtime_suspend_power_mode, - cyapa->runtime_suspend_sleep_time); + cyapa->runtime_suspend_sleep_time, + false); if (error) dev_warn(dev, "runtime suspend failed: %d\n", error); @@ -1401,7 +1429,8 @@ static int __maybe_unused cyapa_runtime_resume(struct device *dev) struct cyapa *cyapa = dev_get_drvdata(dev); int error; - error = cyapa->ops->set_power_mode(cyapa, PWR_MODE_FULL_ACTIVE, 0); + error = cyapa->ops->set_power_mode(cyapa, + PWR_MODE_FULL_ACTIVE, 0, false); if (error) dev_warn(dev, "runtime resume failed: %d\n", error); diff --git a/drivers/input/mouse/cyapa.h b/drivers/input/mouse/cyapa.h index f51deb69c370..af1253640590 100644 --- a/drivers/input/mouse/cyapa.h +++ b/drivers/input/mouse/cyapa.h @@ -273,7 +273,7 @@ struct cyapa_dev_ops { int (*sort_empty_output_data)(struct cyapa *, u8 *, int *, cb_sort); - int (*set_power_mode)(struct cyapa *, u8, u16); + int (*set_power_mode)(struct cyapa *, u8, u16, bool); int (*set_proximity)(struct cyapa *, bool); }; diff --git a/drivers/input/mouse/cyapa_gen3.c b/drivers/input/mouse/cyapa_gen3.c index e7bbfee8b5d6..1a9d12ae7538 100644 --- a/drivers/input/mouse/cyapa_gen3.c +++ b/drivers/input/mouse/cyapa_gen3.c @@ -950,7 +950,7 @@ static u16 cyapa_get_wait_time_for_pwr_cmd(u8 pwr_mode) * Device power mode can only be set when device is in operational mode. */ static int cyapa_gen3_set_power_mode(struct cyapa *cyapa, u8 power_mode, - u16 always_unused) + u16 always_unused, bool is_suspend_unused) { int ret; u8 power; @@ -1112,7 +1112,7 @@ static int cyapa_gen3_do_operational_check(struct cyapa *cyapa) * may cause problems, so we set the power mode first here. */ error = cyapa_gen3_set_power_mode(cyapa, - PWR_MODE_FULL_ACTIVE, 0); + PWR_MODE_FULL_ACTIVE, 0, false); if (error) dev_err(dev, "%s: set full power mode failed: %d\n", __func__, error); diff --git a/drivers/input/mouse/cyapa_gen5.c b/drivers/input/mouse/cyapa_gen5.c index fa135f855f34..6d7abbed67e4 100644 --- a/drivers/input/mouse/cyapa_gen5.c +++ b/drivers/input/mouse/cyapa_gen5.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "cyapa.h" @@ -1565,7 +1566,7 @@ int cyapa_pip_deep_sleep(struct cyapa *cyapa, u8 state) } static int cyapa_gen5_set_power_mode(struct cyapa *cyapa, - u8 power_mode, u16 sleep_time) + u8 power_mode, u16 sleep_time, bool is_suspend) { struct device *dev = &cyapa->client->dev; u8 power_state; @@ -1574,9 +1575,6 @@ static int cyapa_gen5_set_power_mode(struct cyapa *cyapa, if (cyapa->state != CYAPA_STATE_GEN5_APP) return 0; - /* Dump all the report data before do power mode commmands. */ - cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); - if (PIP_DEV_GET_PWR_STATE(cyapa) == UNINIT_PWR_MODE) { /* * Assume TP in deep sleep mode when driver is loaded, @@ -1679,8 +1677,8 @@ static int cyapa_gen5_set_power_mode(struct cyapa *cyapa, * is suspending which may cause interrupt line unable to be * asserted again. */ - cyapa_empty_pip_output_data(cyapa, NULL, NULL, NULL); - cyapa_gen5_disable_pip_report(cyapa); + if (is_suspend) + cyapa_gen5_disable_pip_report(cyapa); PIP_DEV_SET_PWR_STATE(cyapa, cyapa_sleep_time_to_pwr_cmd(sleep_time)); @@ -2515,7 +2513,7 @@ static int cyapa_gen5_do_operational_check(struct cyapa *cyapa) * the device state is required. */ error = cyapa_gen5_set_power_mode(cyapa, - PWR_MODE_FULL_ACTIVE, 0); + PWR_MODE_FULL_ACTIVE, 0, false); if (error) dev_warn(dev, "%s: failed to set power active mode.\n", __func__); @@ -2757,7 +2755,16 @@ int cyapa_pip_irq_handler(struct cyapa *cyapa) /* * Device wake event from deep sleep mode for touch. * This interrupt event is used to wake system up. + * + * Note: + * It will introduce about 20~40 ms additional delay + * time in receiving for first valid touch report data. + * The time is used to execute device runtime resume + * process. */ + pm_runtime_get_sync(dev); + pm_runtime_mark_last_busy(dev); + pm_runtime_put_sync_autosuspend(dev); return 0; } else if (report_id != PIP_TOUCH_REPORT_ID && report_id != PIP_BTN_REPORT_ID && diff --git a/drivers/input/mouse/cyapa_gen6.c b/drivers/input/mouse/cyapa_gen6.c index 61f04132eb65..5f191071d44a 100644 --- a/drivers/input/mouse/cyapa_gen6.c +++ b/drivers/input/mouse/cyapa_gen6.c @@ -429,7 +429,7 @@ static int cyapa_gen6_deep_sleep(struct cyapa *cyapa, u8 state) } static int cyapa_gen6_set_power_mode(struct cyapa *cyapa, - u8 power_mode, u16 sleep_time) + u8 power_mode, u16 sleep_time, bool is_suspend) { struct device *dev = &cyapa->client->dev; struct gen6_interval_setting *interval_setting = @@ -693,7 +693,7 @@ static int cyapa_gen6_operational_check(struct cyapa *cyapa) * the device state is required. */ error = cyapa_gen6_set_power_mode(cyapa, - PWR_MODE_FULL_ACTIVE, 0); + PWR_MODE_FULL_ACTIVE, 0, false); if (error) dev_warn(dev, "%s: failed to set power active mode.\n", __func__); -- cgit v1.2.3